Electronic component module, energy storage device and energy storage system

Abstract

The utility model relates to an electronic component module, an energy storage device and an energy storage system. The electronic component module comprises a shell, a first electronic component arranged in the shell, and an air cooling structure and a liquid cooling structure which are arranged in the shell, and the air cooling structure and the liquid cooling structure are suitable for cooling the first electronic component. According to the technical scheme, the first electronic component is subjected to heat dissipation through a dual heat dissipation system formed in a separate cooling mode and a liquid cooling mode, and the mode can provide higher heat dissipation efficiency compared with a single cooling structure.

Description

Technical Field

[0001] The present disclosure relates to the field of new energy technologies, and in particular, to an electronic component module, an energy storage device, and an energy storage system. Background Art

[0002] With the continuous increase in the demand for high-rate charging and discharging of energy storage devices, electronic components for controlling and managing functions such as charging and discharging of battery modules, such as power conversion systems (PCS) for energy storage and battery management systems (BMS), generate a large amount of heat during operation, which may seriously damage the electronic components in severe cases. Therefore, how to provide a suitable working temperature environment for electronic components is the key to ensuring the stable operation of energy storage devices. Summary of the Utility Model

[0003] To overcome the problems in the related art, the present disclosure provides an electronic component module, an energy storage device, and an energy storage system.

[0004] According to a first aspect of an embodiment of the present disclosure, there is provided an electronic component module, including:

[0005] A housing;

[0006] A first electronic component, which is disposed in the housing;

[0007] An air-cooling structure and a liquid-cooling structure, which are disposed in the housing and are adapted to cool the first electronic component.

[0008] Optionally, the air-cooling structure is configured such that air at a higher temperature exchanges heat with the liquid-cooling structure to become air at a lower temperature, and then cools the first electronic component.

[0009] Optionally, the electronic component module further includes a second electronic component disposed in the housing, and the air-cooling structure and the liquid-cooling structure cool the first electronic component and the second electronic component.

[0010] Optionally, the first electronic component is a power conversion system (PCS) for energy storage, and the second electronic component includes at least one of a battery management system, a power distribution unit, and a busbar unit.

[0011] Optionally, the first electronic component is a power conversion system (PCS) for energy storage, and the second electronic component is a battery management system.

[0012] Optionally, the air-cooling structure includes a fan.

[0013] Optionally, the electronic component module further includes a second electronic component. A first chamber for accommodating the first electronic component and a second chamber for accommodating the second electronic component are provided in the housing. The first chamber and the second chamber are in communication with each other and are configured such that, driven by the fan, air can circulate between the first chamber and the second chamber.

[0014] Optionally, a partition is provided in the housing. The partition divides the housing into the first chamber and the second chamber. There is a gap between the partition and the inner wall of the housing, and the gap forms an air vent for air to circulate between the first chamber and the second chamber.

[0015] Optionally, the first electronic component is a power conversion system for energy storage, and the second electronic component is a battery management system. The air-cooling structure is arranged in the second chamber, and the air outlet of the air-cooling structure faces the second electronic component.

[0016] Optionally, the liquid-cooling structure includes a liquid-cooling pipeline, and the liquid-cooling pipeline is arranged in the second chamber.

[0017] Optionally, the liquid-cooling pipeline is arranged around the second electronic component.

[0018] Optionally, the liquid-cooling pipeline includes a first cooling pipe section arranged between the air-cooling structure and the second electronic component, and second cooling pipe sections respectively arranged on both sides of the second electronic component.

[0019] Optionally, heat exchange fins are arranged outside the liquid-cooling pipeline.

[0020] Optionally, the housing has a sealed structure.

[0021] According to a second aspect of the embodiments of the present disclosure, an energy storage structure is provided, including a cabinet, a battery module arranged in the cabinet, and an electronic component module according to any one of the above in the cabinet.

[0022] Optionally, the electronic component module is arranged on the top of the battery module.

[0023] Optionally, the energy storage device further includes a battery module cooling pipeline connected to the battery module. The liquid-cooling structure of the electronic component module is connected to the battery module cooling pipeline so that the coolant can enter the electronic component module through the battery module cooling pipeline.

[0024] Optionally, the battery module is an immersion liquid-cooling module.

[0025] Optionally, the battery module includes a plurality of adjacent battery modules stacked up and down and connected via the battery module cooling pipeline, wherein the uppermost battery module is connected to the liquid cooling structure in the electronic component module via the battery module cooling pipeline.

[0026] Optionally, the energy storage device also includes a coolant input pipe and a coolant output pipe extending in the up and down directions respectively, wherein the coolant input pipe is provided with an input interface for docking with each of the battery modules, and the coolant output pipe is provided with an output interface for docking with each of the battery modules.

[0027] According to a third aspect of an embodiment of the present disclosure, there is provided an energy storage system, comprising a liquid-cooled air conditioner and any one of the energy storage devices described above, wherein the liquid-cooled air conditioner is connected to the battery module.

[0028] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the electronic component module provided by the present disclosure is provided with an air-cooling structure and a liquid-cooling structure in a shell for cooling the first electronic component, wherein the air-cooling structure can use the flow of gas to take away the heat on the surface of the first electronic component, and the liquid-cooling structure can use the low-temperature cooling liquid to exchange heat with the first electronic component to take away the temperature of the surface of the first electronic component, that is, a dual heat dissipation system formed by the two methods of separate cooling and liquid cooling is used to dissipate the heat of the first electronic component, which can provide higher heat dissipation efficiency than a single cooling structure.

[0029] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are used to provide further understanding of the present disclosure and constitute a part of the specification. They are used to explain the present disclosure together with the following detailed description, but do not constitute a limitation of the present disclosure.

[0031] Figure 1 is a schematic diagram of an electronic component module provided by an exemplary embodiment of the present disclosure.

[0032] Figure 2 is a schematic diagram of an energy storage device provided in an exemplary embodiment of the present disclosure.

[0033] Figure 3 yes Figure 2 Schematic diagram of the internal structure of the energy storage device.

[0034] Figure 4 is a schematic diagram of an energy storage system provided in an exemplary embodiment of the present disclosure.

[0035] Description of Reference Numerals

[0036] 100 - Electronic component module, 1 - Housing, 11 - Housing main body, 12 - Cover body, 13 - Partition board, 14 - Second chamber, 15 - First chamber, 16 - Air outlet, 2 - Second electronic component, 3 - Air cooling structure, 31 - Fan, 4 - Liquid cooling structure, 41 - Liquid cooling pipeline, 411 - First cooling pipe section, 412 - Second cooling pipe section, 5 - First electronic component, 6 - Heat exchange fins, 200 - Battery module, 300 - Cabinet, 410 - Battery module cooling pipeline, 420 - Cooling input management, 421 - Input interface, 430 - Cooling output pipeline, 431 - Output interface, 1000 - Energy storage device, 2000 - Liquid cooling air conditioner. Detailed implementation manners

[0037] Here, exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0038] The implementation manners described in some embodiments of the present disclosure below do not represent all implementation manners consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0039] As Figures 1 to 3 shown, an exemplary implementation manner of the present disclosure provides an electronic component module 100, which can be applied to an energy storage device 1000 and is used to control and manage functions such as charging and discharging of the battery module 200. Specifically, the electronic component module 100 includes a housing 1, a first electronic component 5 disposed in the housing 1, an air cooling structure 3 and a liquid cooling structure 4 disposed in the housing 1, and the air cooling structure 3 and the liquid cooling structure 4 are adapted to cool the first electronic component 5.

[0040] The first electronic component 5 can be set as a power conversion system (PCS) for energy storage, a battery management system (BMS), a power distribution unit, or a busbar unit, etc., according to the functions that the electronic component module 100 needs to achieve. Different from the configuration method in which the first electronic component 5 is directly exposed to the air, the present disclosure disposes the first electronic component 5 in the housing 1, which can serve the purpose of isolating the inside of the housing 1 from the external thermal environment, that is, reducing the adverse thermal interference of the heat generated by the battery module 200 on the first electronic component 5, and can also protect the first electronic component 5 when a failure such as fire occurs in the battery module 200.

[0041] The air-cooling structure 3 can utilize the flow of gas to carry away the heat on the surface of the first electronic component 5. In addition, as described in some subsequent embodiments, the gas used for air cooling can be a low-temperature gas, which can not only carry away the temperature on the surface of the first electronic component 5 but also exchange heat with the first electronic component 5 to further reduce the temperature on the surface of the first electronic component 5. The liquid-cooling structure 4 can utilize the low-temperature coolant to exchange heat with the first electronic component 5 to carry away the temperature on the surface of the first electronic component 5. For example, it can be that a cooling pipeline with coolant inside contacts the first electronic component 5 or the first electronic component 5 is immersed in the coolant. Different from some related technologies that only adopt a single cooling method, such as only having a liquid-cooling structure or only having an air-cooling structure, the present disclosure simultaneously arranges the air-cooling structure 3 and the liquid-cooling structure 4 inside the housing 1. That is, a dual heat dissipation system is formed by simultaneously using the two methods of air cooling and liquid cooling, which can provide higher heat dissipation efficiency compared with a single cooling structure.

[0042] The technical solution provided by the embodiment of the present disclosure may include the following beneficial effects: In the electronic component module 100 provided by the present disclosure, an air-cooling structure 3 and a liquid-cooling structure 4 for cooling the first electronic component 5 are respectively arranged inside the housing 1. Among them, the air-cooling structure 3 can utilize the flow of gas to carry away the heat on the surface of the first electronic component 5, and the liquid-cooling structure 4 can utilize the low-temperature coolant to exchange heat with the first electronic component 5 to carry away the temperature on the surface of the first electronic component 5. That is, the first electronic component 5 is cooled by a dual heat dissipation system formed by air cooling and liquid cooling, and this method can provide higher heat dissipation efficiency compared with a single cooling structure.

[0043] In some embodiments, the air-cooling structure 3 can be configured such that the higher-temperature air becomes lower-temperature air after exchanging heat with the liquid-cooling structure 4, and then cools the first electronic component 5. The general principle of heat dissipation of the air-cooling structure 3 is to carry away the heat on the surface to be cooled through air flow. On this basis, the air-cooling structure 3 provided by the present disclosure further enables the higher-temperature air to first exchange heat with the liquid-cooling structure 4 to form lower-temperature air before flowing through the first electronic component 5, and then makes this part of the lower-temperature air flow through the surface of the electronic component 5. That is, different from the related technologies that directly exchange heat between the higher-temperature air and the surface of the first electronic component 5, the air inside the housing 1 of the present disclosure can take away more heat when contacting the surface of the first electronic component 5 by making the air temperature lower before exchanging heat with the surface of the first electronic component 5, which further improves the heat dissipation efficiency. It should be noted that the higher-temperature air and the lower-temperature air here are relative. Even the higher-temperature air should have a temperature lower than the temperature on the surface of the first electronic component 5 under high magnification operation.

[0044] The electronic component module 100 of the present disclosure may further include a second electronic component 2 disposed in the housing 1, and the air cooling structure 3 and the liquid cooling structure 4 cool the first electronic component 5 and the second electronic component 2. Optionally, the first electronic component 5 may be a power conversion system (PCS), and the second electronic component 2 may be at least one of a battery management system (BMS), a power distribution unit, or a busbar unit. Optionally, the first electronic component 5 may be a power conversion system, and the second electronic component 2 may be a battery management system. That is, the electronic component module 100 of the present disclosure integrates the power conversion system and the battery management system in one module. This integrated design of electronic components enables the power conversion system and the battery management system to be close enough to each other so that they can be directly connected by cables, avoiding the need for additional wiring design.

[0045] As Figure 1 shown, in some embodiments, the air cooling structure 3 may include a fan 31. The electronic component module may further include a second electronic component 2. The housing 1 is provided with a first chamber 15 for accommodating the first electronic component 5 and a second chamber 14 for accommodating the second electronic component 2. By partitioning the housing 1 into the first chamber 15 and the second chamber 14, it is possible to prevent one of the electronic components from catching fire due to failure and affecting the other electronic component. Wherein, the first chamber 15 and the second chamber 14 are connected and configured such that under the drive of the fan 31, air can circulate between the first chamber 15 and the second chamber 14, thereby sequentially dissipating heat from the electronic components in the two chambers, and then the air with increased temperature exchanges heat with the liquid cooling structure 4 again to become air with a lower temperature.

[0046] As an embodiment capable of realizing the circulation of air between the first chamber 15 and the second chamber 14, a partition 13 is provided in the housing 1, and the partition 13 divides the housing 1 into the first chamber 15 and the second chamber 14. Wherein, there is a gap between the partition 13 and the inner wall of the housing 1, and this gap forms an air inlet 16 for air to circulate between the first chamber 15 and the second chamber 14. For example Figure 1 shown as a partition 13 extending in the up-down direction of the drawing surface and having gaps with the housing 1 at both ends in the up-down direction. The partition 13 may be integrally injection-molded with the housing 1, for example. In some other embodiments, the partition 13 may also extend to be in contact with the inner wall of the housing 1, and in this case, air inlets 16 for air flow may be selected to be opened on the partition 13. As shown by the arrows, air enters the left first chamber 15 from the right second chamber 14 through the bottom air inlet 16, and then returns to the right second chamber 14 through the top air inlet 16.

[0047] Continue to refer to Figure 1, in some embodiments, the first electronic component 5 is a power conversion system for energy storage, and the second electronic component 2 is a battery management system. The battery management system is disposed in the second chamber 14, and the power conversion system for energy storage is disposed in the first chamber 15. The fan 31 is disposed in the second chamber 14, and the air outlet of the air-cooling structure 3, such as the fan 31, faces the second electronic component 2. That is to say, the fan 31 is disposed on one side of the battery management system, mainly because the ideal temperature of the battery management system is lower than that of the power conversion system for energy storage, and thus has higher requirements for heat dissipation.

[0048] As Figure 1 indicated by the arrow in the figure, the air blown out by the fan 31 first exchanges heat with the liquid-cooling structure 4 to become lower-temperature air, and then exchanges heat with the battery management system to take away the heat on the surface of the battery management system; then this part of the air is blown out from the bottom air outlet 16 to the first chamber 15 on the left, and exchanges heat with the power conversion system for energy storage in the second chamber 14 to take away the heat on the surface of the power conversion system for energy storage. At this time, the air that has exchanged heat with the electronic component twice becomes higher-temperature air. The higher-temperature air is sucked into the second chamber 14 on the right through the top air outlet 16, and the above process is cycled under the action of the fan 31.

[0049] In some embodiments, as Figure 1 shown, the liquid-cooling structure 4 includes a liquid-cooling pipeline 41, and the liquid-cooling pipeline 41 is disposed in the second chamber 14. Optionally, the liquid-cooling pipeline 41 can be configured to surround the second electronic component 2 to further improve the heat dissipation efficiency. Further, the liquid-cooling pipeline 41 can include a first cooling pipe section 411 disposed between the fan 31 and the second electronic component 2 and second cooling pipe sections 412 respectively disposed on both sides of the second electronic component 2. The higher-temperature air blown out by the fan 31 first passes through the first cooling pipe section 411 to form lower-temperature air, and then exchanges heat with the battery management system to take away the heat on the surface of the battery management system. At the same time, the air on both sides flows along the second cooling pipe sections 412, so that heat exchange can be continuously performed with the second cooling pipe sections 412 and the battery management system can be cooled at the same time. In addition, heat exchange fins 6 can be disposed outside the liquid-cooling pipeline 41. For example, heat exchange fins 6 can also be disposed outside the first cooling pipe section 411 and / or the second cooling pipe sections 412. The heat exchange fins 6 can provide a large heat exchange area, which is beneficial to improving the heat exchange efficiency between the higher-temperature air and the liquid-cooling structure 4.

[0050] The housing 1 of the electronic component module 100 provided by the present disclosure can be configured as a sealed structure. Such a sealed structure is conducive to reducing the loss of cold air inside the housing 1 and better maintaining the temperature inside the housing 1. Since the air in the housing 1 can circulate, that is, the higher-temperature air can exchange heat with the liquid cooling structure 4 again to become lower-temperature air, it will not cause the temperature of the air to continuously rise even in a closed structure, and can also maintain a lower temperature inside the housing 1. The housing 1 can include a housing main body 11 and a cover body 12, which facilitates the replacement of the electronic components inside the housing 1. Of course, in some other embodiments, an opening can also be provided on the wall of the housing 1, and under the action of the fan 31, external air can be introduced into the housing 1 and the air after heat exchange can be discharged from the housing 1.

[0051] According to the second aspect of the embodiments of the present disclosure, as Figure 2 shown, an energy storage device 1000 is further provided. The energy storage device 1000 includes a cabinet body 300, a battery module 200 disposed in the cabinet body 300, and the electronic component module 100 according to any one of the above disposed in the cabinet body 300. The electronic component module 100 is the electronic component module according to any one of the above and has all its beneficial effects, which will not be elaborated here. Optionally, the electronic component module 100 is disposed on the top of the battery module 20, which is conducive to the expansion of the battery module 200. That is, only the battery module 200 needs to be stacked upward, and there is no need to adjust the structure of the electronic component module 100 itself, and the versatility is higher.

[0052] In the related art, it is usually necessary to introduce a coolant into the battery module 200 to dissipate heat from the battery module 200. As Figure 2As shown, the energy storage device 1000 provided by the present disclosure further includes a battery module cooling pipeline 410 connected to the battery module 200. The liquid cooling structure 4 of the electronic component module 100, such as the liquid cooling pipeline 41, is connected to the battery module cooling pipeline 410, so that the coolant can enter the electronic component module 100 through the battery module cooling pipeline 410. In this embodiment, after the coolant first dissipates heat from the battery module 200, the coolant coming out of the battery module 200 then continues to enter the electronic component module 100, realizing the sharing of the coolant. Generally speaking, the temperature of the coolant coming out of the battery module 200 is about 25°C, which is much lower than the ideal operating temperatures of the energy storage converter and the battery management system. The operating temperature of the energy storage converter is about 70°C, and the operating temperature of the battery management system is about 50°C. Therefore, even using the secondary cold source coming out of the battery module 200 will not affect the effective heat dissipation of the electronic component module 100. In this way, the coolant used for dissipating heat from the battery module 200 can be used to dissipate heat from the electronic component module 100, without the need to additionally install equipment such as a liquid cooling air conditioner 2000 for the electronic components 100. And because the coolant for dissipating heat from the battery module 200 can continuously exchange heat with the liquid cooling air conditioner 2000, thus always providing low-temperature coolant, this can also always provide low-temperature coolant for the electronic component module 100, ensuring that the air inside the housing 1 can always obtain a lower temperature during the circulation process. Optionally, the battery module 200 can be an immersion liquid cooling module, which can provide higher cooling efficiency for the battery module 200.

[0053] The battery module 200 can include a plurality of upper and lower stacked ones. The adjacent two modules 200 are connected by the battery module cooling pipeline 410, that is, the coolant can flow between the adjacent two battery modules 200. Among them, the uppermost battery module 200 is connected to the liquid cooling structure in the electronic component module 100 through the battery module cooling pipeline 410, that is, the coolant flowing out of the uppermost battery module 200 is introduced to be connected to the electronic component module 100, which makes the structure of the energy storage device 1000 relatively simple and convenient to install. Of course, it is also possible to introduce the coolant flowing out of each battery module 200 to be connected to the electronic component module 100, and the present disclosure will not elaborate on this.

[0054] Furthermore, the energy storage device 1000 may further include a coolant input pipe 420 and a coolant output pipe 430 that extend in the vertical direction. The coolant input pipe 420 is provided with an input interface 421 for docking with each battery module 200, and the coolant output pipe 430 is provided with an output interface 431 for docking with each battery module 200. The coolant input pipe 420 is used to input coolant at a lower temperature into the battery module 200 and the electronic component module 100, and the coolant output pipe 430 is used to output the coolant at a higher temperature after heat exchange from the battery module 200 and the electronic component module 100 and return it to the liquid cooling air conditioner. The coolant in the pipeline can be distributed to each battery module 200 and the electronic component module 100 through the input interface 421 and the output interface 431.

[0055] According to the third aspect of the embodiments of the present disclosure, as Figure 4 shown, there is also provided an energy storage system, which includes a liquid cooling air conditioner 2000 and the energy storage device of any one of the above. The liquid cooling air conditioner 2000 is connected to the battery module 200. The liquid cooling air conditioner 2000 is similar in structure and principle to a conventional air conditioner, except that the liquid cooling air conditioner 2000 outputs coolant. The liquid cooling air conditioner 2000 is connected to the battery module 200. For example, the liquid cooling air conditioner 2000 can be connected to the battery module 200 through the coolant input pipe 420 and the coolant output pipe 430. Multiple energy storage devices 1000 can be arranged at intervals.

[0056] The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0057] In addition, it should be noted that, in the above specific embodiments, the various specific technical features described can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present disclosure does not separately describe various possible combination methods.

[0058] In addition, any combination can be made between various different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. An electronic component module, characterized in that: The electronic component module comprises: case; a first electronic component, the first electronic component being disposed in the housing; An air cooling structure and a liquid cooling structure are arranged in the shell and are suitable for cooling the first electronic component.

2. The electronic component module according to claim 1, characterized in that: The air cooling structure is configured such that air with a relatively high temperature becomes air with a relatively low temperature by exchanging heat with the liquid cooling structure, thereby cooling the first electronic component.

3. The electronic component module according to claim 1, characterized in that: The electronic component module further includes a second electronic component disposed in the housing, and the air cooling structure and the liquid cooling structure cool the first electronic component and the second electronic component.

4. The electronic component module according to claim 3, characterized in that: The first electronic component is an energy storage inverter, and the second electronic component includes at least one of a battery management system, a power distribution unit and a confluence unit.

5. The electronic component module according to claim 4, characterized in that: The first electronic component is an energy storage inverter, and the second electronic component is a battery management system.

6. The electronic component module according to claim 1, characterized in that: The air cooling structure includes a fan.

7. The electronic component module according to claim 6, characterized in that: The electronic component module also includes a second electronic component. The shell is provided with a first chamber for accommodating the first electronic component and a second chamber for accommodating the second electronic component. The first chamber and the second chamber are connected and configured so that air can circulate in the first chamber and the second chamber under the drive of the fan.

8. The electronic component module according to claim 7, characterized in that: A partition is provided in the shell, the partition divides the shell into the first chamber and the second chamber, and there is a gap between the partition and the inner wall of the shell, and the gap forms an air outlet for air to circulate in the first chamber and the second chamber.

9. The electronic component module according to claim 7, characterized in that: The first electronic component is an energy storage inverter, the second electronic component is a battery management system, the air cooling structure is arranged in the second chamber, and the air outlet of the air cooling structure is directed toward the second electronic component.

10. The electronic component module according to claim 9, characterized in that: The liquid cooling structure includes a liquid cooling pipeline, and the liquid cooling pipeline is arranged in the second chamber.

11. The electronic component module according to claim 10, characterized in that: The liquid cooling pipeline is arranged around the second electronic component.

12. The electronic component module according to claim 11, characterized in that: The liquid cooling pipeline includes a first cooling pipe section arranged between the air cooling structure and the second electronic component and a second cooling pipe section respectively arranged on both sides of the second electronic component.

13. The electronic component module according to claim 10, characterized in that: Heat exchange fins are arranged outside the liquid cooling pipeline.

14. The electronic component module according to claim 1, characterized in that: The housing is configured as a sealed structure.

15. An energy storage device, characterized in that: It comprises a cabinet, a battery module arranged in the cabinet, and an electronic component module according to any one of claims 1 to 14 arranged in the cabinet.

16. The energy storage device according to claim 15, characterized in that: The electronic component module is arranged on the top of the battery module.

17. The energy storage device according to claim 16, characterized in that: The energy storage device also includes a battery module cooling pipeline connected to the battery module, and the liquid cooling structure of the electronic component module is connected to the battery module cooling pipeline so that the cooling liquid can enter the electronic component module through the battery module cooling pipeline.

18. The energy storage device according to claim 17, characterized in that: The battery module is an immersion liquid cooling module.

19. The energy storage device according to claim 17, characterized in that: The battery modules include a plurality of battery modules stacked up and down, and two adjacent battery modules are connected via the battery module cooling pipeline, wherein the uppermost battery module is connected to the liquid cooling structure in the electronic component module via the battery module cooling pipeline.

20. The energy storage device according to claim 19, characterized in that: The energy storage device also includes a coolant input pipe and a coolant output pipe extending in the up and down directions respectively, wherein the coolant input pipe is provided with an input interface for docking with each of the battery modules, and the coolant output pipe is provided with an output interface for docking with each of the battery modules.

21. An energy storage system, characterized in that: It comprises a liquid-cooled air conditioner and the energy storage device according to any one of claims 15 to 20, wherein the liquid-cooled air conditioner is connected to the battery module.

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